Research Papers (TP)

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    Conserved quantities from piecewise Killing vectors
    (IOP Publishing, 1988-11-10) Dray, Tevian; Padmanabhan, T.
    In the presence of symmetries, conserved quantities can be obtained by contracting the stress-energy tensor with a killing vector. We generalize this result to piecewise Killing vectors by giving sufficient conditions for the construction of an associated conserved quantity. A typical example namely, namely two stationary space-times joined together in such a way that the resulting space-time is not stationary, is treated in detail.